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These are the 'Greenest' and 'Meanest' cars in 2015

As has become tradition, the American Council for an Energy-Efficient Economy (ACEEE) has come up with a ranking of what it refers to as the "greenest" cars of 2015, and, by way of contrast, a list of the so-called "meanest" cars, so those who value eco-friendliness over all else can choose which vehicles they should or should not consider buying. As you may expect, electric cars make up the majority of the greenest cars on the list, but, perhaps surprisingly to many, the Tesla Model S didn't make the cut. It's worth noting, too, that where the electricity an owner uses to charge their electric vehicle has a big impact on its overall environmental impact. "A car that is charged using electricity generated from natural gas or renewables is going to have significantly less impact on the environment than one charged on a coal-heavy grid," says ACEEE lead vehicle analyst Shruti Vaidyanathan. The ACEEE's list for 2015 looks very different than it did in 2014. It's an interesting collection, though – and we're sure this goes without saying, really – we'd recommend doing a bit more research into each vehicle and how it might fit into your daily life before making any purchase decisions. Click here to see the ACEEE's list of the Greenest and Meanest vehicles sold in the United States in 2015. Green Bugatti Chevrolet Fiat GM GMC Mercedes-Benz Nissan RAM smart Toyota greenest greenest cars

Mercedes-AMG GT attacks Circuit of the Americas

Mercedes-Benz is having a banner year with its Formula One team. Through 2014, the constructor has 454 championship points; ahead of its nearest competitor (Red Bull-Renault) by a margin of 182 tally marks. We're sure they can almost taste the champagne.
It's fitting then, and a little big cocky in a good way, that Mercedes has released a video of its newest sports car at an F1 venue. In this case, the car is the lovely Mercedes-AMG GT S, and the racetrack is Austin's Circuit of the Americas.
Having seen the official photo set and scratched the surface of the technical specifications earlier this week, we're excited to finally hear the thing run. As you might guess, the deployment of 503 horsepower and 479 pound-feet of torque from the twin-turbo V8 is a motivating experience. Crank up your volume, and hit that play button. (Oh, and Mercedes shot the thing in 4K, too, so those of you with expensive televisions/monitors should take heed to the settings.)

Mercedes-Benz GLE Coupe is ready to tackle BMW's X6

Under the chiseled hood of the GLE 450 AMG sits a 3.0L, twin-turbo V6 with 362 hp and 384 lb-ft. Years after the polarizing BMW X6 originally hit the market, Mercedes-Benz has finally unveiled its slope-roofed challenger, and much like Munich's Sport Activity Vehicle, we think the new GLE Coupe will split opinions rather dramatically. While it clearly shares its form factor with BMW's X4 and X6, the GLE Coupe's styling is all Mercedes, borrowing the more organic shapes used on the company's most recent new model, the AMG GT. Strips of chrome and the iconic silver arrow logo bisect a large, rectangular grille, while the fascia on the GLE 450 shown above features three rather dramatic lower air intakes. The headlights, meanwhile, fit in with MB's latest styling language. In back, slim, wraparound taillights share some resemblance with the new S-Class Coupe. The cabin is recognizable and looks to be of extremely high quality, with the featured vehicle showing off quite a lot of carbon-fiber trim. A thick-rimmed, flat-bottomed steering wheel dominates the driver's area, while a large, tablet-like display crowns the center stack. The same sort of touch-controlled interface and input dial found on the new C-Class controls the information on that screen. Under the chiseled hood of the GLE 450 AMG, the first of Mercedes' AMG Sport models, sits a 3.0-liter, twin-turbocharged V6. Unlike the 329-horsepower unit in the C400 and E400, the force-induced V6 generates 362 hp and an equally robust 384 pound-feet of torque. It's mated up to a new nine-speed automatic transmission and Mercedes' 4Matic all-wheel-drive system. A new version of the popular Airmatic suspension is being offered with the ADS Plus continuously variable dampers while Mercedes is also fitting its Active Curve System, complete with active roll stabilization. Mercedes doesn't provide many additional details on the GLE Coupe range, as it were. We know about the 450 AMG, but it's not clear whether there will be a GLE 400 or non-AMG 450, or if Mercedes will move it down market and offer a GLE 350 to compete with the X6's xDrive35i. There's also no mention of when or where the new model will debut, although previous reports point to the 2015 Detroit Auto Show. Prices and an on-sale date, meanwhile, have not been revealed. Scroll down for the full press blast from Mercedes-Benz on its newest model, the 2016 GLE Coupe. Premiere: Mercedes-Benz GLE Coupe A sportier choice Stuttgart.